CURRENT AFFAIRS

Detailed explanation-1: -The correct answer is 1, 2 and 3. The Bureau of Indian Standards (BIS) has prepared a draft standard for the supply system of piped drinking water. The draft has been titled ‘Drinking water supply quality management system - requirements for piped drinking water supply service’.

Detailed explanation-2: -The Bureau of Indian Standards (BIS) has specified drinking water quality standards in India to provide safe drinking water to the people.

Detailed explanation-3: -It sets the Indian Standard (IS) 10500 for the treated water for drinking. The IS 10500 outlines the acceptable limit of heavy metals such as arsenic, pH value of water, turbidity, the total dissolved solids in it, and the colour and odour.

Detailed explanation-4: -According to the Bureau of Indian Standards (BIS), the upper limit of TDS levels in water is 500 ppm. The TDS level recommended by WHO, however, is 300 ppm.

Detailed explanation-5: -3.1 Drinking Water - Drinking water is water intended for human consumption for drinking and cooking purposes from any source. It includes water (treated or untreated) supplied by any means for human consumption. Drinking water shall comply with the requirements given in Tables 1 to 4.